optimization:Merge slices

config/interpolate_walk.go

@@ -271,9 +271,7 @@ func (w *interpolationWalker) splitSlice() {
 				result = append(result, val.Value)
 			}
 		case []interface{}:
-			for _, element := range val {
-				result = append(result, element)
-			}
+			result = append(result, val...)
 		default:
 			result = append(result, v)
 		}

config/merge.go

@@ -144,12 +144,8 @@ func Merge(c1, c2 *Config) (*Config, error) {
 		// Explicit length check above because we want c.Locals to remain
 		// nil if the result would be empty.
 		c.Locals = make([]*Local, 0, len(c1.Locals)+len(c2.Locals))
-		for _, v := range c1.Locals {
-			c.Locals = append(c.Locals, v)
-		}
-		for _, v := range c2.Locals {
-			c.Locals = append(c.Locals, v)
-		}
+		c.Locals = append(c.Locals, c1.Locals...)
+		c.Locals = append(c.Locals, c2.Locals...)
 	}
 
 	return c, nil

terraform/resource_address.go

@@ -42,9 +42,9 @@ func (r *ResourceAddress) Copy() *ResourceAddress {
 		Type:         r.Type,
 		Mode:         r.Mode,
 	}
-	for _, p := range r.Path {
-		n.Path = append(n.Path, p)
-	}
+
+	n.Path = append(n.Path, r.Path...)
+
 	return n
 }